UPGRADE TIME!! Preamp vs. Speakers???

Throw away everything, and buy all new.

some more great points you all make!

I already have the components and "sound signature" I like.

New plans due to professional room/ acoustics analysis:
Due to my listening area having "not even the basics for great imaging" poor layout of walls and ceilings, small size, unable to move system to another location.

All I can really do is change how I aim the speakers, and move the acoustic panels around. I would not benefit by spending allot more on the stereo itself w/o addressing the other problems first.

Stringreen:I already have "overkill in components for what I have to work with"
I will not be selling my equipment as I do not want to loose anymore money in trade or whAtever other direction I go.

Preamp.
Speakers will be more of the same thing.

I’m using a Simaudio 740i Integrated amplifier with a new pair of Sopra 2 speakers. Previously I had a pair of Focal 1028be2 speakers also using the 740i.
The Simaudio electronics has a very musical smooth sound that matches quite well with Focal Speakers. I’ve heard both models of the Focal speakers using Macintosh, Spectral, Hegal and Naim electronics in addition to my own personal Simaudio 740i amplifier. I think the Macintosh and Simaudio gear is the best match with the Focal sound.
The Macintosh (solid state) seemed a bit more "colored", especially in the bass....the Simaudio was a bit more neutral but both were very musical sounding on the Focal’s.  I could live with either amp but given the choice I'd go with Simaudio.  Haven't heard tubes with either model of the Focal I have owned, but I'd sure like to try some Audio Research Reference gear with the Sopra's.  

I can't address your speakers, but I recently upgraded from a 340i to a 740P + 760A (one), and the difference in noise floor was dramatic, and strangely enough, the external phono stage has much less incoming noise on the 740P vs. the 340i (using the same input type on both).   If anything, the 740P makes the 340i seem like a much worse choice at its price given how much better the 740P sounds in my system.